ABUSE.MOM
THREAT REPORT

IP Threat Report
185.244.51.21

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-26 22:30:57
First seen: 2026-04-19 02:00:06
Last seen: 2026-05-24 10:22:11
120

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 120/100. Total malicious requests observed: 915.

BURSTRATIO_404UA_CHANGED
01

Geolocation & Classification

IP Address
185.244.51.21
Type
Hosting
Country
🇷🇺 Russia
City
Moscow
ISP
AdminVPS LLC
Organization
AdminVPS OOO
Autonomous System
AS211183 AdminVPS OOO
Hit Count
915
02

Detection Signatures

SignatureDescriptionPointsSeverity
404 ratio 40-60%Majority of requests returned 404 — enumeration+15
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
Burst 10/10sAbnormally fast request rate — automated scanning+35
Burst 10/2sAbnormally fast request rate — automated scanning+35
Burst 19/10sAbnormally fast request rate — automated scanning+35
Burst 19/2sAbnormally fast request rate — automated scanning+35
Burst 35/10sAbnormally fast request rate — automated scanning+35
Burst 35/2sAbnormally fast request rate — automated scanning+35
Burst 5/2sAbnormally fast request rate — automated scanning+35
Burst: 10 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 10 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 17 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 17 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 19 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 19 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 31 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 31 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 5 req / 2sAbnormally fast request rate — automated scanning+35
UA changedMultiple User-Agents — bot rotation technique+25
Σ = 625
03

Observed Activity

Reconstructed HTTP requests from server access logs. Target domains redacted for security.

[redacted]
GET
/
200
[redacted]
GET
/page
200
Requests shown: 2 · HTTP 404: 0 · Dangerous patterns: 0

* Typical request patterns for detected signatures. Actual target domains are redacted.

04

Timeline

2026-04-19 02:00:06
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
404 ratio 40-60% (+15), 404 ratio >= 60% (+25), Burst 10/10s (+35)
2026-05-24 10:22:11
Last malicious request observed
Total score reached: 120/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

AdminVPS LLC
AS211183 · 🇷🇺 Russia
06

Recommendations

Actions taken & recommended

  • IP 185.244.51.21 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🔎 Path Enumeration Protection

Block scanning from 185.244.51.21: rate-limit 404 responses per IP, deploy a honeypot 404 page, ensure no backup files are web-accessible.

🌊 Traffic Flood Defense

IP 185.244.51.21 is generating excessive traffic. Limit connections per source IP. Enable geographic blocking if traffic from this region is unexpected.

🤖 Bot Detection

Address UA spoofing from 185.244.51.21: maintain blocklist of known malicious UA strings, require consistent UA across sessions, implement TLS fingerprinting.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

✓ Clean
bl.spamcop.net
✓ Clean
b.barracudacentral.org
✓ Clean
psbl.surriel.com
✓ Clean
cbl.abuseat.org
✓ Clean
bl.blocklist.de
✓ Clean
zen.spamhaus.org
✓ Clean
spam.dnsbl.sorbs.net
✓ Clean
dnsbl.dronebl.org

Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.

10

Threat Analysis

185.244.51.21 has been assigned a threat score of 120/100 (Critical). With this rating, the IP falls into the critical severity bracket — among the most dangerous addresses in our monitoring database.

The following attack categories were identified:

Path EnumerationRequest FloodingUser-Agent Anomaly

📊 Threat Analysis

The address 185.244.51.21 originates from Moscow, Russia, operating on the network of AdminVPS LLC. It was identified through automated analysis of incoming network traffic across monitored endpoints. The address has been active for 35 days in our monitoring system, producing 915 flagged requests at a rate of ~26.1/day. This address belongs to a datacenter or cloud hosting provider. Hosting IPs are frequently leveraged by threat actors who rent cheap VPS instances specifically for conducting attacks. With 3 different attack patterns detected, this IP exhibits behavior characteristic of advanced automated scanning frameworks. Russia currently accounts for 101 blocked IPs in our database, making it a significant source of malicious traffic. A score of 120/100 places this address in the top tier of severity. Block and investigate any historical connections.

This IP belongs to a hosting or data center provider. Malicious traffic from hosting infrastructure often originates from compromised VPS instances, rented servers used for scanning campaigns, or abused free-tier cloud accounts. Hosting providers typically respond to abuse reports within 24-72 hours.

11

Related Threats

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🏢 Same network: AS211183

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12

Security Intelligence

💡 DDoS Mitigation Approaches

Distributed denial of service attacks overwhelm infrastructure with traffic volume. Effective mitigation combines always-on traffic scrubbing, anycast network distribution, rate limiting, and the ability to quickly scale absorption capacity during attacks.

💡 Zero-Day Vulnerability Markets

Zero-day vulnerabilities command premium prices in both legitimate and criminal markets. Government agencies, defensive security firms, and criminal organizations compete for these undisclosed flaws, creating a complex ecosystem around vulnerability discovery and disclosure.

🔍 Check Any IP Address

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